Because you like Lyra Belacqua in The Golden Compass

Merlin is half awkward teenager, half super-powerful wizard. He serves Prince Arthur of Camelot during the day and illegally learns magic at night. See them in Merlin.

A daughter of a pair of superheroes, Hope van Dyne is scientist is brilliant and fearsome. See them in Marvel Cinematic Universe.

Just call Jeff Lebowski The Dude. Or His Dudeness, Duder, or El Duderino if you're not into that whole brevity thing. See them in The Big Lebowski.

Success for Eggsy Unwin means joining Kingsman, and failure could mean death. See them in Kingsman: The Secret Service.

In Ziva David's world, you grow up fast; you don't have a choice. See them in NCIS.

Mark Sloan is the best plastic surgeon and biggest playboy the hospital's ever seen. See them in Grey's Anatomy.

Cyclops shoots lasers out of his eyes, destroying anything in his line of sight. See them in X-Men Series.

Steve Rogers is a good soldier. But above all, he's a good man. See them in Marvel Cinematic Universe.

Rayon is kinder to the world than the world is to her. See them in Dallas Buyers Club.

Most of the world has been wiped out from The Beast. And when The Beast comes, Cole MacGrath will be ready. See them in inFAMOUS.

People make more sense to the hyper-logical Temperance Brennan after they're dead. See them in Bones.

The fearless bodyguard of Rick Flag, Katana will ruthlessly kill her enemies, trapping their souls in her sword. See them in DC Extended Universe.